Grand Cherokee 2WD V8-5.7L VIN 2 (2005)
stored DTC. For other internal faults, the stored DTC is latched forever.
The OCM receives battery current on a fused ignition switch output (run-start) circuit through a fuse in the Junction Block (JB). The OCM receives
ground through a ground circuit and take out of the body wire harness. These connections allow the OCM to be operational whenever the ignition switch
is in the Start or On positions.
The hard wired inputs and outputs for the OCM may be diagnosed and tested using conventional diagnostic tools and procedures. However, conventional
diagnostic methods will not prove conclusive in the diagnosis of the OCM, the CAN data bus, or the electronic message inputs to and outputs from the
OCM. The most reliable, efficient, and accurate means to diagnose the OCM, the CAN data bus network, and the electronic message inputs to and
outputs from the OCM requires the use of a diagnostic scan tool.
